BRPI0519316B1 - WATER HERBICIDE COMPOSITION AND PROCESS FOR PREPARING A COMPOSITION - Google Patents

Abstract

herbicidal aqueous composition, and process for the preparation of a composition. The present invention relates to herbicidal compositions composed of an aminophosphate or aminophosphonate salt, especially to herbicidal compositions composed of a relatively high amount of an aminophosphate or aminophosphonate salt and a betaine-based surfactant composition of matter.

Description

“WATER HERBICIDE COMPOSITION, AND, PROCESS FOR THE PREPARATION OF A COMPOSITION’ *

BACKGROUND OF THE INVENTION

The present invention relates to herbicide compositions composed of an aminophosphate or aminophosphonate salt, especially herbicidal compositions composed of a relatively high amount of an aminophosphate or aminophosphonate salt and to a surfactant composition based on matter betaine.

Among various presentations of compositions composed of ^ 0 glyphosate, concentrated liquid compositions that can be diluted by the end user (typically a farmer) are of interest. Usually, the higher the glyphosate concentration, the better, because the end user can adjust the use concentration (the amount of active applied in the field) by adjusting the dilution, and can avoid handling too much product (for example, the higher the concentration, the lower the weight).

The concentrated compositions can be composed of a high amount of glyphosate, water, and at least one surfactant compound that can be useful as a formulation aid (dispersion, dissolution and / or stability of glyphosate in water), and / or as an activator biological (for example, increasing the effectiveness of the glyphosate salt, for example, encouraging the humidification of a weed to be eliminated, or encouraging the glyphosate to penetrate the weed). The amount of glyphosate, the nature of the surfactant, the amount of the surfactant, and possible 25 other ingredients, may also have an effect on the rheological properties of the composition (for example, viscosity, or the ability to spread), as such, or diluted. The rheological properties of the composition as such or after dilution are important for handling and application purposes.

When the concentration of glyphosate is high, crystallization should be avoided. Crystallization can occur at different temperatures, at different concentrations of glyphosate, or when diluted with water. Crystallization is characterized by the formation of 5 small solid particles composed of glyphosate. These small particles can have a bad impact of filter clogging, orifice clogging, creating dangerous and unnecessary disposal problems for the disposal of crystals, loss of activity (bio-efficiency), and / or poor distribution of the asset in the field.

^ 0 Compositions that are composed of glyphosate and surfactants of ethoxylated fatty amines are known. However, these compounds are believed to be quite toxic, irritating or slightly biodegradable. There is a need to replace these compounds or to reduce the amount of them in the compositions.

WO 01/17358 (Monsanto) describes compositions that are composed of a high amount of isopropylamine glyphosate salt and a surfactant mixture composed of a surfactant of the formula R-CO-NR ^ CRyn-COOM. The surfactant mixture is considered to increase herbicidal effectiveness. The surfactant, however, is M) expensive and there is a need for other solutions.

WO / 063589 (Rhodia) describes compositions that are composed of 360 g / l of isopropylamine glyphosate salt (as the glyphosate acid equivalent, 783 g / l as the salt concentration), a betaine surfactant, and at least another compound such as amines or optionally ethoxylated heteroamines.

WO 01/17358 (Albright & Wilson) describes compositions composed of 360 g / liter of isopropylamine glyphosate salt (as glyphosate acid equivalent), desalted alkyl betaine surfactants or alkyl amidopropyl betaine surfactants, and optionally, carboxyl ether. The document also describes compositions composed of 360 g / l of isopropylamine glyphosate, and surfactants of alkyl betaines or alkyl amidopropyl betaines composed of 6 to 12% by weight of NaCl. The document teaches that the stability of the composition is linked to the presence of inorganic salts and teaches that the total level of said inorganic salts is preferably less than 0.39% by weight. Compositions having alkyl betaine or desalinated alkyl amidopropyl betaine surfactants are taught as preventing glyphosate crystallization. However, desalination is expensive. There is a need for less expensive compositions and / or compositions composed of larger amounts of glyphosate that do not precipitate.

BRIEF SUMMARY OF THE INVENTION

The invention addresses at least one of the concerns above.

Accordingly, the invention relates to an aqueous herbicidal composition composed of:

- at least 360 g per liter of an anphophosphate or aminophosphonate salt, preferably a glyphosate or glyphosinate salt.

- at least 80 g / l, preferably at least 100 g / l, from a surfactant system composed of:

—0 - a betaine surfactant composition of matter composed of:

-Water,

- a betaine having the formula R ¹ R ² R ² N-CH2COO ', where:

- R ¹ is a straight or branched hydrocarbon group, preferably an alkyl group containing 3 to 30 carbon atoms, preferably 3 to 20 carbon atoms,

- R ² , identical or different, is a C1-C3 alkyl group, preferably a methyl group, and

- at least 1% by weight of a chloride-based salt, preferably a potassium chloride salt, and

- optionally, at least one surfactant other than betaine from the betaine surfactant composition of matter.

According to another aspect, the invention relates to a process for the preparation of an aqueous herbicidal composition.

According to another aspect, the invention relates to the use of the surfactant composition of matter betaine in an aqueous herbicidal composition composed of at least 360 g / 1 of an aminophosphate or aminophosphonate salt, preferably a glyphosate or glyphosinate salt .

According to another aspect, the invention relates to the use of a surfactant system composed of the betaine surfactant composition of matter and optionally the different surfactant, in an aqueous herbicidal composition composed of at least 360 g / 1 of an aminophosphate salt or aminophosphonate, preferably a glyphosate or glyphosinate salt.

The invention also relates to the use of the composition.

DETAILED DESCRIPTION OF THE INVENTION

Definitions

In the current specification, unless otherwise stated, the amounts of aminophosphate or aminophosphonate salt, preferably a glyphosate or glyphosinate salt, are expressed as acid equivalents.

In the current specification, unless otherwise stated, the amounts of the surfactant system of the betaine surfactant composition are the total amounts of a mixture or combination 25 (quantities as they are), as opposed to quantities of active material, amounts of dry material (solids content), or the like.

In the current specification, unless otherwise stated, the amounts of active surfactant material, for an ingredient or surfactant system, for example the composition of the betaine surfactant material or the surfactant system, are defined as the amount of dry ingredient material of the surfactant system, minus the total amount of salt of the ingredient or surfactant system.

In the current specification, Chloride-based salts refer to any salt having CF, especially KC1 or NaCl. Their quantities can be determined by conventional means. The amounts, unless otherwise stated, refer to amounts by weight in the herbicide composition.

In the current specification, substantially no sodium cation refers to amounts of sodium cations less than 1% by weight, preferably less than 0.1% by weight, preferably less than 0.01% .

In the current specification, a surfactant system refers to an association or surfactant mixtures that are produced separately in the composition or as a mixture prepared before introduction.

Surfactants are usually derived from the reaction composed of several different compounds. These different compounds have an effect on the herbicidal composition. Therefore, reference is made to the surfactant composition of matter. Therefore, in the current specification, a betaine surfactant composition of matter is understood as a mixture composed of water, a chlorine-based salt, the active molecule of betaine surfactant, and optionally, other compounds, such as pH buffer solutions .

The ingredients of the composition are described below. Any combination thereof can be implemented and defined, and / or prepare the composition according to the invention, and / or the uses according to the invention.

Aminophosphate or aminophosphonate salt

The aminophosphate or aminophosphonate salts are known to the person skilled in the art.

Preferred salts are glyphosate or glyphosinate salts. Glyphosate refers to N- (phosphonomethyl) glycine.

Glyphosinate refers to 4- [hydroxy (methyl) phosphinoyl] -DL5 homoalanine.

Salts include:

- sodium salts (Na);

- potassium salts (K);

- ammonium salts having N (R) ₄ ⁺ cations where the identical or different R, fp groups represent a hydrogen atom or a linear or non-linear, saturated or unsaturated Ci-C ₆ hydrocarbon group optionally substituted by a hydroxyl group , for example, isopropylamine salts;

- sulfonium salts; said salts being present alone or in a combination.

Ammonium salts that can be specially cited include salts obtained from secondary or primary amines, such as isopropylamine (IPA), dimethylamine, diamines, such as ethylenediamine or alkanolamines, such as monoethanolamine (MEA).

ZD Trimethyl sulfonium is a perfectly suitable sulfonium salt.

Preferred glyphosate salts for herbicidal application that can be cited are the isopropylamine salt (IPA), the monoethanolamine salt (MEA), trimethylsulfonium salt, potassium salt, ammonium salt, and mixtures or combinations thereof, for example , as taught in WO 01/26469 (Nufarm) and WO 03/013241 (Nufarm).

In the present invention, isopropylamine-containing salts are preferred. Accordingly, in a preferred embodiment, the salt is an isopropylamine glyphosate salt. In a preferred embodiment, the relationship between the cation, such as the isopropylamine cation and glyphosate, is about 1/1. However, the ratio can be greater than 1/1. Such a relationship produces compositions having a higher pH. The higher the pH, the lower the crystallization. The pH can also be controlled using any basic compound, such as 5 for example, KOH or other buffer solutions.

Surfactant system

The surfactant system is composed of the betaine surfactant composition of matter and optionally at least one surfactant other than the betaine of the betaine surfactant composition of matter. Different fO surfactants can be provided in the herbicidal composition as a separate ingredient; they can therefore be referred to as an association. In another embodiment, at least one different surfactant can be supplied as a mixture with the betaine surfactant composition of matter, it can therefore be referred to as a mixture. In that embodiment, the different surfactant can be prepared separately or simply mixed with the matter betaine surfactant composition, or prepared by the same process of preparing the matter betaine surfactant composition. Some different useful surfactants are described below as additional ingredients and as additional surfactants.

Betaine surfactant composition of matter:

Surfactants are usually derived from the reaction composed of several different compounds. These different compounds have an effect on the herbicidal composition. So they are referred to as a surfactant composition of matter.

The betaine surfactant composition of matter is composed of:

-Water,

- a betaine having the formula R ¹ R ² R ² N'-CH ₂ COO ·, where:

- R ¹ is a straight or branched hydrocarbon group, preferably an alkyl group containing 3 to 30 carbon atoms, preferably 3 to 20 carbon atoms,

- R ² , identical or different, is a C _r C ₃ alkyl group, preferably a methyl group,

- at least 1% by weight of a chloride-based salt, preferably a potassium chloride salt.

Betaine is a major surfactant compound of the betaine surfactant composition of matter. It is preferably a major surfactant in the surfactant system. It is also referred to as the main surfactant. Main surfactant compound means that the said 0 surfactant compound represents the highest important surfactant compared to other optional surfactants. For example, in a mixture or combination consisting of 40 parts of surfactant 1, 30 parts as surfactant 2, and 30 parts as surfactant 3, surfactant 1 would be considered as the main surfactant, even if it represents 15 less than 50% of all surfactants.

Preferably, the main betaine asset represents at least 30% by weight, preferably at least 50%, of the total surfactant main asset of the surfactant system in the composition.

Advantageously, the betaine surfactant composition of M) matter is composed of:

-Water,

- at least 25%, preferably at least 30% by weight, as the main active surfactant in betaine,

- at least 2%, preferably at least 5% by weight of a potassium chloride salt.

Preferably, the betaine surfactant composition of matter is composed of:

- Water,

- at least 30%, preferably at least 35% by weight of the main active betaine surfactant,

- at least 5% by weight of a potassium chloride salt, and

- substantially no sodium cation.

In a preferred embodiment, the total amount of inorganic salts in the surfactant system, preferably chloride-based salts, is greater than 0.4% by weight, and preferably, greater than 1% by weight.

In a preferred embodiment, the amount of inorganic salts, preferably chloride-based salts, is greater than 8%, preferably greater than 10%, preferably greater than 12%, by weight of the amount of betaine surfactant composition of matter.

In a preferred embodiment, the total amount of inorganic salts, preferably chloride-based salts, is greater than 8%, preferably greater than 10%, preferably greater than 12% by weight of the amount of surfactant system.

Betaine preferably has R ² as a methyl group (alkyldimethylbetaine).

R ¹ is an alkyl group. This group is usually actually a mixture of different groups having different amounts of carbon atoms, being linear or branched, and optionally, having some unsaturation. These mixtures come from reagents used to prepare them, which are actually distillation cuts and / or have a natural origin. In the current specification, the amount of carbon atoms in the R ¹ group refers to the number of carbon atoms of the two most represented species.

In a preferred embodiment:

- R ² is a methyl group, and

- R ¹ is a mixture of the lauryl alkyl group, having more than 50% by weight of C12.

The betaine surfactant composition of matter can be obtained, and preferably is obtained, from a process that is composed of the following steps:

Step 1) the reaction of a compound of the formula RJJVJVN with 5 chloroacetic acid, to obtain a reaction product;

Step 2) adding potassium hydroxide to increase the pH,

Step 3) optionally, adding some additional ingredients or adjusting the concentration and pH.

It is mentioned that step 1 and step 2 can also be carried out simultaneously, by the addition of potassium hydroxide during the termination of the reaction or by the progressive addition of chlor-acetic acid and potassium hydroxide.

In another embodiment, chlorine potassium acetate is used in step 1) instead of chlor-acetic acid, and step 2) is optional.

In a preferred embodiment, the process does not include any desalination or ion exchange steps. Therefore, the process is cost effective, and therefore the herbicidal composition can also be interesting from a cost perspective.

Advantageously, the pH of the betaine surfactant composition of matter is 6 to 8, in a 1% by weight water solution.

Other ingredients

The herbicidal composition can be composed of other ingredients, such as:

- surfactants other than betaine from the betaine surfactant composition of matter, as part of the surfactant system,

- defoaming agents,

- solvents, preferably water-miscible solvents, preferably polar solvents, or

- deposition control agents, such as anti-rebound, or anti-floating agents, optionally added later.

The person skilled in the art knows other ingredients that can be used to control some properties or characteristics of the composition and / or to add benefits.

Formulations can, for example, be composed of:

- organopolysiloxane defoaming agent;

- thickening agents, such as xanthan gum type polysaccharides, alginates, carboxylated or ethoxylated methyl celluloses, synthetic macromolecules of the polyacrylate type, polymaleate, polyvinylpyrrolidone, polyethylene glycol and polyvinyl alcohol, or inorganic type such as bentonites.

- auxiliary additives such as antioxidants, anti-UV agents, dyes, etc.

- solvents, such as alcohol, for example, isopropanol, typically up to 15% by weight.

The amount of these additives listed above is usually less than 10% by weight, preferably 1% by weight or less, advantageously 0.1% by weight or less, compared to the weight of the composition.

ZD Other surfactants

The herbicidal composition can be composed of an additional surfactant, different from the betaine of the betaine surfactant composition of matter. This additional surfactant may produce other advantages or synergies in terms of cost, and / or bio-efficacy, and / or control of rheology, and / or environmental concerns and / or sensitivity concerns.

Examples of other surfactants include:

- an ethoxylated fatty amine, a grease amine,

- a carboxyl ether,

- an acidic or non-acidic phosphate mono- and di-ester, optionally polyalkoxylated,

- an alkyl monoglycoside or alkyl polyglycoside, advantageously octyl glycoside, octyl polyglycoside, decyl glycoside, decyl polyglycoside, or a mixture thereof, or

- mixtures thereof.

Fatty amines or ethoxylated fatty amines can be composed of at least one hydrocarbon group containing 2 to 24 carbon atoms, optionally poly-alkoxylated.

The fatty amines or ethoxylated fatty amines can be more specially chosen from amines that are composed of at least one linear or branched, saturated or unsaturated group, containing 2 to 24 carbon atoms, preferably 8 to 18 carbon atoms, optionally , being composed of 2 to 30 ethylene oxide groups, or a mixture of an amount thereof. Examples include ethoxylated tallow amines.

Fatty amines or ethoxylated fatty amines can be chosen from ethoxylated fatty amines composed of at least one linear or branched, saturated or unsaturated group containing 6 to 24 carbon atoms, preferably 8 to 20 carbon atoms, compounds from 2 to 30 ethylene oxide groups, or a mixture of an amount thereof.

Ξ3 Examples include compounds having the following formula:

(OAJn /

RO- (CH ₂ ) ₃ -N \

(OA) _h · where R represents a straight or branched, saturated or unsaturated hydrocarbon group, containing 6 to 24 carbon atoms, preferably 8 to 20 carbon atoms; OA represents an oxypropylene group; en, ri, which may or may not be identical, represents an average number 25 in the range 1 to 30.

Examples of such amines can be cited as amines derived from copra and containing 5 oxyethylene (OE) groups, oleic amines containing 5 OE, tallow amines containing 5 - 20 OE, for example, compounds corresponding to the above formula, in which R is an alkyl group containing 12 to 15 carbon atoms, the number of OE groups being in the range of 20 to 30.

The amount of fatty amines or ethoxylated fatty amines can be from 0 (none) to 120 g / 1 of the composition, preferably from 0 (none) to 60 g / 1.

The carboxylate ether preferably has the formula R (0CH ₂ CH2) nOCH ₂ CO2; where R is a linear or branched alkyl, alkenyl, alkylphenyl or polypropylene oxyl group having 6 to 20, for example, S to 1 aliphatic carbon atoms and n is 1 to 30, preferably 2 to 20. Carboxylate ether, of preferably, it has an ammonium or potassium counterion, or obtained from an amine or alkanolamine having up to 6 carbon atoms.

The acid or non-acid phosphate mono- and di-ester, optionally poly-alkoxylated is chosen from acid or non-acid phosphate mono- or di-esters, optionally poly-alkoxylated, with the formula below:

(AO) ₃ . _m P (= O) (OM) _m where:

- A, identical or different, represents a group R ⁿ -O (CH2CHR ' ² -O) _n where:

- R ' ¹ , identical or different, represents a group of C ₆ -C 2 saturated or unsaturated hydrocarbons, linear or non-linear, preferably Cg-Cig;

- R ' ² , identical or different, represents a hydrogen atom or a methyl or ethyl group, preferably a hydrogen atom;

- n is an average number of groups in the range 0 to 10, preferably in the range 2 to 10;

- M, identical or different, represents a hydrogen atom, an alkali or alkaline earth metal, a radical of type N (R ³ ) ₄ ⁺ where R ³ , identical or different, represents a hydrogen atom or a group of Ci hydrocarbons -Ce saturated or unsaturated, linear or non-linear, optionally substituted with a hydroxyl group;

- m is an integer or average number in the range 1 to 2.

The acidic or non-acidic, optionally poly-alkoxylated mono- or di-ester phosphate can be in the form of a mono-ester, a di-ester, or a mixture of these two esters.

The amount of acid or non-acid phosphate mono- and di-ester, optionally polyalkoxylated, can be from 0 (none) to 120 g / l of the composition.

Process for the preparation of the herbicidal composition.

The compositions of the invention can be prepared by mixing their different constituents with moderate agitation.

This operation preferably takes place at a temperature in the range of 15 ° C to 60 ° C, preferably at a temperature close to the ambient temperature (15 - 30 ° C).

Μ) The surfactant composition of matter is preferably added as soon as the other constituents have been mixed.

Therefore, a complete preferred process can consist of the following steps:

- step a) preparation of a surfactant composition of matter 25 through a process that consists of the following steps:

step 1) reaction of a compound of the formula R ^! R ² R ² N with chloro-acetic acid to obtain a reaction product;

step 2) adding potassium hydroxide to increase the pH, step 3) optionally adding some additional ingredients or adjusting the concentration or pH.

- step b) mixing the aminophosphate or aminophosphonate salt, the surfactant composition of matter and optionally other ingredients

Step b), for example, is composed of the steps of producing a mixture of water and the aminophosphate or aminophosphonate salt, and then adding the surfactant composition of matter.

It is mentioned that step 1 and step 2 can also be carried out simultaneously, by the addition of potassium hydroxide during the completion of the reaction or by the progressive addition of chloro-acetic acid and potassium hydroxide.

In another embodiment, potassium chloro-acetate is used in step 1) instead of chlor-acetic acid, and step 2) is optional.

Preferred characteristics of the herbicidal composition

Advantageously, in the herbicidal composition, the total amount of active surfactant material is at least 24 g / l.

Advantageously, the active surfactant material is at least 25% by weight of the surfactant system. In other words, the surfactant system has at least 25% by weight as a betaine surfactant active material together with optional different surfactants.

Advantageously, the herbicide composition is composed of at least 80 g / l, preferably at least 100 g / l, of the betaine surfactant composition of matter. Therefore, the betaine surfactant composition of matter represents the whole of a part of the surfactant system in the herbicidal composition.

Advantageously, the herbicidal composition is composed of:

- from 360 g / l to 560 g / l of the aminophosphate or aminophosphonate salt, preferably the glyphosate salt, preferably the isopropylamine glyphosate salt, and

- from 80 g / l to 160 g / l of the surfactant system, preferably of the betaine surfactant composition of matter.

Advantageously, the composition is composed of:

- 400 to 500 g / liter of glyphosate salt, preferably isopropylamine glyphosate salt, and

- from 100 to 135 g / 1 of the surfactant system, preferably of the betaine surfactant composition of matter.

Preferably, the composition is composed of:

- at least 500 g / 1 of the glyphosate salt, preferably the isopropylamine glyphosate salt, and

- at least 120 g / 1, preferably at least 135 g / 1, of the surfactant system, preferably of the betaine surfactant composition of matter.

It is preferred that the total amount of inorganic salts in the composition, preferably chloride-based salts, be greater than 15 0.4% by weight, and preferably greater than 1% by weight.

At high loads of glyphosate salt, especially with salts other than potassium salts, for example, with isopropylamine glyphosate salt, the invention allows, among others, the handling of less composition (lower load), with good stability (no crystal) with M) an interesting bio-efficacy and / or toxic profile.

At low loads of glyphosate salt, and especially with salts other than potassium salts, for example, with isopropylamine glyphosate salt, the invention allows, among others, good stability (no crystal) with a bio-efficacy and / or interesting toxic profile and so the surfactant load can be increased.

Downstream use

The herbicide composition of the invention can therefore be used to treat plants, usually after dilution with water. The diluted composition can be applied to a field by any means

appropriate.

The dilution, and the application on the field, can for example be such that the amount of aminophosphate or aminophosphonate salt, preferably glyphosate salt, is 500 g of acid equivalent / ha to 1,500 5 g of equivalent acid / ha, typically 600 to 1,200 g / ha.

After dilution the end user can mix other herbicides, pesticides, fertilizers, fungicides. For example, the end user can combine the glyphosate salt with other herbicides to equate some weed resistance to glyphosate. A] The composition according to the invention, especially with glyphosate salt other than potassium salt, for example, with isopropylamine glyphosate salt, produces good compatibility with other herbicides. The invention can allow high loads of glyphosate salts with good compatibility.

Some details or advantages of the invention will appear in the non-limiting examples below.

EXAMPLES

The following ingredients are used:

Surfactant 1: surfactant composition of matter composed of the following: -0 - alkyldimethylbetaine, where alkyl is a mixture of about 70% by weight of lauryl (C ₁₂ ) and about 30% by weight of tetradecyl (Cu),

- solids: about 41% by weight

- KC1: about 9% by weight

Surfactant 2: Mirataine D40, marketed by Rhodia

Surfactant 3: Terwet 3780 tallow amine ethoxylate, Hunstman Glyphosate: isopropylamine glyphosate salt (46% acid equivalent by weight)

The following compositions are prepared (C represents comparative, and e represents acid equivalent). Table:

Example 1 2 3C 4C Glyphosate (ae) 450 g / L 510 g / L 450 g / L 450 g / L Surfactant 1 (quantity as is) 120 g / L 140 g / L Surfactant 2 (quantity as is) 120 g / L Surfactant 3 120 g / L pH 4.5 how 7% solution 4.5 how 7% solution 4.5 how 7% solution Aspect no crystal no crystal some crystals it is not stable

The study shows that the composition according to the invention has surprisingly good stability, without the formation of crystals.

In the meantime, the compositions according to the examples have better bio-efficacy (less fresh weight) and / or faster (greater browning) in at least some significant weeds (annual ryegrass and wild radish).

Claims (10)

1. Aqueous herbicidal composition, characterized by the fact that it comprises: a) - from 400 to 500 g / L of a glyphosate salt, expressed as acid equivalents; and - from 100 to 135 g / l of a betaine surfactant composition of matter, or b) at least 500 g / L of a glyphosate salt, expressed as acid equivalents; and - at least 120 g / l of a material betaine surfactant composition, with said material betaine surfactant composition comprising: - Water, - at least 30% by weight as a betaine surfactant active material having the formula R ¹ R ² R ² N ⁺ -CH ₂ COO, where: - Ri is a mixture of the lauryl alkyl group having more than 50% by weight of C ₁₂ , - R2 is a methyl group, and - at least 5% by weight of a potassium chloride salt, and - substantially no sodium cation. 2. Composition according to claim 1, characterized by the fact that the active betaine surfactant material represents at least 30% by weight of the total active surfactant material in the composition. Composition according to one of Claims 1 to 2, characterized in that the betaine surfactant composition of matter comprises at least 35% by weight as the active betaine surfactant material. Composition according to one of Claims 1 to 3, characterized in that the amount of potassium chloride salts is greater than 8% by weight of the amount of the surfactant composition of matter betaine. Composition according to one of Claims 1 to 4, characterized in that the glyphosate salt is an isopropylamine glyphosate salt. Composition according to one of Claims 1 to 5, characterized in that the surfactant composition of betaine of matter is obtained through a process that comprises the following steps: Step 1) reaction of a compound of the formula R ¹ R ² R ² N with chloro-acetic acid, to obtain a reaction product; Step 2) adding potassium hydroxide to increase the pH. Composition according to one of Claims 1 to 6, characterized in that it additionally comprises: - one or more surfactant (s) other than betaine from the betaine surfactant composition of matter, - defoaming agents, - solvents, or - deposition control agents. 8. Composition according to claim 7, characterized by the fact that the surfactant other than betaine of the betaine surfactant composition of matter is: - an ethoxylated grease amine, - a carboxyl ether, - an acid or non-acid phosphate mono- and di-ester, - a mono-glycoside alkyl or polyglycoside alkyl, or - mixtures thereof. Process for preparing a composition as defined in one of claims 1 to 8, characterized in that it comprises the following steps: - step a) preparing a betaine surfactant composition of matter through a process comprising the following steps: step 1) reaction of a compound of the formula R ¹ R ² R ² N with chloro-acetic acid, to obtain a reaction product, 5 step 2) adding potassium hydroxide to increase the pH, step b) mixing the glyphosate salt and the betaine surfactant composition of matter. Process according to claim 9, characterized 10 in that step b) comprises the steps of providing a mixture of water and glyphosate salt, and then adding the betaine surfactant composition of matter.